SAT Math Videos (Part 5

Problem 1 :The value of stock is going up by 200% every hour. Which of the following best describes the relationship time (in hours) and the value of the stock?
A)  Increasing linear
B)  Decreasing linear
C)  Exponential growth
D)  Exponential decaySolution :

Problem 2 :A sports equipment manufacturer produced 3,600 footballs and 2,200 basketballs during the fall. In the winter, it produced 3,060 footballs and a certain number of basketballs. If the manufacturer decreased the production of basketballs by the same percentage as it did foir footballs, how many basketballs did it produce in the winter?
A) 1,810
B) 1,870
C) 1,920
D) 1,950Solution :

Problem 3 :If x/5 = k/y, where k is a constant, and y = 3 when x = 10, what is the value of y when x = 2?A)  10B)  12C)  15D)  18Solution :

Problem 4 :The number of books in a warehouse can be found using the expression 4,000 + bd, where b is the number of boxes of books the warehouse receives each day over a period of d days. What is the best interpretation of 100 in the expression?A)  The number of books in each boxB)  The number of books received each day C)  The number of boxes received that contain booksD)  The number of days it takes to receive each boxSolution :

Problem 5 :Of the following four scenarios, which one would result in exponential decay of the total amount of money kept in safe?
A)  The owner withdraws a third of the money remaining in the safe every month.B)  The owner withdraws 100 dollars every month from the safe.C)  The owner withdraws 10% of the original amount of money in the safe of every month.D)  The owner empties the account in five moths by withdrawing an equal amount of money each month.
Solution :

You might like these
SAT Math Videos (Part – 1)SAT Math Videos (Part – 2)SAT Math Videos (Part – 3)SAT Math Videos (Part – 4)SAT Math Videos (Part – 5)SAT Math Videos (Part – 6)SAT Math Videos (Part – 7)SAT Math Videos (Part – 8)SAT Math Videos (Part – 9)SAT Math Videos (Part – 10)

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